baber/WOPTO huggingface dataset:
Patent GB-981833-A (GB)
Title: Process for the bromination of aromatic compounds
Inventor: HAHN HEINRICH
IPC: C07C17/12
Filed: 1961-12-05
Abstract: Aromatic compounds, containing more than three bromine atoms in the molecule, are prepared by bromination of aromatic compounds, which contain non-condensed benzene nuclei, in an inert reaction medium in the presence of a halogenation catalyst and with vigorous stirring at a temperature of 10 DEG  to 160 DEG  C., using a mixture of bromine and chlorine (the quantities being 1.0-1.5 atom per qm. atom of hydrogen to be substituted in the organic compound), an excess of at least 0.2 gm. atom of bromine, relative to chlorine per molecule of aromatic compound present, being maintained until the reaction is complete, followed by the addition of a quantity of chlorine at the end of the reaction at least equivalent to the excess of bromine present.  Halogenation catalysts specified are iodine, iron, aluminium. ferric bromide or mixtures thereof.  Inert solvents mentioned are carbon tetrachloride, tetrachloroethane and acetic acid.  The mother liquor remaining after separation of the bromine derivative may be used again to prepare a fresh batch of the bromine derivative. Examples illustrate the preparation of hexabromobenzene and tetrabromobenzene from benzene; tetra- and pentabromodiphenyl from diphenyl, polybromo derivatives of diphenyl ether containing small proportions of chlorine from diphenyl ether, and b ,b 1-bis (3,5-dibromo-4-hydroxyphenyl)-propane from b ,b 1 - bis (4 - hydroxyphenyl)-propane.
Patent GB-1433539-A (GB)
Title: Mining machine dust collector
IPC: E21C35/22
Filed: 1973-09-18
Abstract: 1433539 Mining machines; dust suppression in mines JOY MFG CO 18 Sept 1973 [18 Sept 1972] 43681/73 Heading E1F A mining machine has a boom-enclosed dust collector assembly for use in a coal mining Operation wherein the dusty air from a mining operation is gathered directly from said operation, collected in the mining machine boom, selectively wetted and separated by centrifugal processing into a coal slurry for disposal and clean air for exhaust. In the machine shown dust-containing air is drawn into the boom, by a fan unit housed in the boom, through intakes 12, 13, 20 and a top intake (not shown). Clean air leaves the boom through exhaust duct 16, 18 and the slurry is discharged from the boom through ports 14. The fan unit includes a vane-mounting, centrally disposed unit 28, 30 discharging into a spiral passage 34 of the fan casing where the dust contaminated air is sprayed by water from nozzles 40 as the dust moves outwards of the air to be collected in dust traps 68-74 spaced along the outer wall 56 of the passage through which the clean air passes to one or the other of discharge ports depending on the setting of gate 76. The slurried dust passes by gravity from the traps to the ports 14. A modified fan is also described.
Patent GB-1026623-A (GB)
Title: Joint for use in the suspension of a motor vehicle
IPC: B60G11/28
Filed: 1962-11-21
Abstract: 1,026,623. Endless-track vehicle suspensions. RHEINSTAHL HUTTENWERKE A.G. Nov. 21, 1962 [Nov. 22, 1961], No. 44033/62. Heading B7D. [Also in Division E2] A running wheel 4 of a track-laying vehicle is rotatable on a stub axle 3 carried by an arm 2 pivoted to the vehicle chassis. A hydraulic-pneumatic suspension 5 comprising a piston 7 and a piston rod 6 is connected to the arm 2 by a joint (see Division E2) which includes a cup 15 secured to the piston rod and a rounded head 9 which rolls on the inside surface of the cup and is secured to the arm 2. The head is part of an inverted U-shaped member which is engaged by a stirrup 22 bolted across the cup to prevent separation of the joint. The rolling surface of the cup is cylindrical and has a greater radius of curvature than the arcuate rolling surface of the head. In a plane perpendicular to that in which the main movement occurs the head is gently rounded.
Patent GB-1364579-A (GB)
Title: Sampling and/or filtering method and apparatus
IPC: B07B4/08
Filed: 1972-09-25
Abstract: 1364579 Sampling and filtering device GLASROCK, PRODUCTS Inc 25 Sept 1972 44268/72 Heading B1D [Also in Division Gl] A sampling and/or filtering device comprises an elongate hollow sampling member 19 open at both ends, a resilient piston member 25 mounted at one end of the sampling member and comprising a body having an axially disposed bore 32 through it and a flange or lip 30 integral with and projecting outwardly from the body to form a seal with the inernal surface of a container 10 when the sampling member and piston member move into the container, and porous filter member 40 of plastics material, glass wool, asbestos, synthetic plasics fibres, sintered glass on diatomaceous silica press-fitted into the bore 32. In use, the liquid may be initially above or below the piston member. When the liquid is initially below the piston member the piston member is forced into container 10 and the liquid flows through the filter, then sampling member 19 enclosing the filtered liquid may be tilted in the container (Fig. 4, not shown) to allow withdrawal of the sampling member.
Patent GB-1092714-A (GB)
Title: Improvements in or relating to pneumatic control systems
IPC: G05D23/185
Filed: 1964-11-03
Abstract: 1,092,714. Restriction and filter for pneumatic control lines. HONEYWELL Inc. Nov. 3, 1964 [Nov. 4, 1963], No. 44848/64. Heading BIT. [Also in Divisions F2 and G3] A disposable cartridge 20, comprising filter media 27, 28, one open end 24 and a small orifice 32 at the other end, is used as a restriction in a pneumatic control system. The cartridge comprises cotton wadding 27 and a sintered metal plug 28, having a recess 30 adjacent to orifice 32, and is located in an air supply conduit 11, conveniently in a T junction (Fig. 4 and Figs. 3, 5, not shown), with orifice 32 downstream of the filter. In controlling temperature (Fig. 1, not shown) a bleed type thermostat (14), connected to passage 42 in Fig. 4, opens and closes a valve to atmosphere in response to temperature variations, thereby varying the pressure in passages 42, 43, downstream of cartridge 20, and this pressure acts on a spring-loaded pneumatic actuator (16) to regulate the temperature. Orifice 32 may be a hole 0.007 inches in diameter or a plurality of holes. In Fig. 6 (not shown) a cartridge 20 in a suitable adaptor is fitted into an existing pneumatic thermostat housing, and the adaptor provides connections to a bleed type thermostat (not illustrated) and to inlet and outlet lines equivalent to 11, 15 in Fig. 1.
Patent GB-1518709-A (GB)
Title: Process for preparation of photoconductive powder of cadmiium sulphide type materials
IPC: H01L31/0296
Filed: 1975-10-30
Abstract: 1518709 Photo-conductive powders KONISHIROKU PHOTO INDUSTRY CO Ltd 30 Oct 1975 [6 Nov 1974] 45058/75 Heading C1A [Also in Division G2] Cadmium sulphide, cadmium selenide, cadmium sulphoselenide or zinc selenide photoconductive powder is dispersed in a liquid dispersion medium, without addition of an activator selected from halides, sulphates or nitrates of Au, Ag and Cu, in the presence of a dispersant which does not melt nor react at the heating temperature, e.g. NaCI, KCl, NaBr, KBr, KI, NaI, CdSO 4 , ZnSO 4 , NaSO 4  or KSO 4 , removing the dispersion medium and heating the residue at 400-800‹C. The firing may be carried out in the presence of fluxes and/or donor. materials. The dispersion medium used may be water or an organic solvent such as alcohol, acetone, methylethyl ketone or ethyl acetate. In the preferred embodiment a mixture of 0-10 parts donor material, 0-100 parts flux and at least 20 parts of the dispersant per 100 parts of the photo-conductive material and an appropriate amount of dispersion medium is dried and then fired at 400-800‹C. The fired product may be washed with water to remove dispersant and other water-soluble salts, dried and then fired at 350-700‹C in vacuum or an atmosphere of N 2 , H 2 S or sulphur gas.
Patent GB-1402005-A (GB)
Title: Wax and asphalt packs
IPC: B65D30/08
Filed: 1972-09-29
Abstract: 1402005 Packaging hot wax and bitumen; bags EXXON RESEARCH & ENG CO 29 Sept 1972 [12 Nov 1971] 45103/72 Headings B8C and B8K In a process for packaging hot wax; or asphalt, an open bag ABCEK, Fig. 2b, comprising an outer layer a, Fig. 1a, of woven fibrous fabric internally coated with a thin layer of asphalt, wax, or polyethylene b, an intermediate paper layer c, and an innermost layer, or coating, of silicone, or plastics film d, is placed in an open container FGHJ and then filled with hot wax, or asphalt and closed, the container and bag then being wholly immersed in water, Fig. 5, whereby the bag floats out of the container. The bag is kept in the water until it cools to an ambient temperature, or sinks. The outer fabric a may comprise fibres like jute, sisal, or coir, and the bag is manufactured by stitching, or stapling, a laminate of sheet material to leave an opening KE the edges of which are turned in to form a lapel. The intermediate and innermost layers of the bag may be replaced by a lamination of a plurality of them. The bag may be covered by another bag of paper either laminated with a plastics film, or coated internally with silicone, and, if desired, an additional intermediate bag of tough material, such as metal foil, may be laminated to either, or both of the bags or, loosely placed therebetween.
Patent GB-452722-A (GB)
IPC: B31B160/10
Abstract: 452,722. Feeding sheets. SMITHE MACHINE CO., Inc., F. L., and NOVICK, A., 633, West 44th Street, New York, U.S.A. Feb. 25, 1935, No. 6032. [Class 100 (i)] [See also Group XVII] In a machine for making window envelopes having the usual side end and sealing flaps, the lowermost blank of a pile 7, retained by a finger 11 and resting on adjustable pins 10, is engaged near its lower margin by a suction picker 13 and moved partly away from the pile, a cain-and-link operated separator, comprising two daggers 15, moving forward into the space between the partly removed blank and the pile, so pressing the blank near to the periphery of a feed roll 16. The extracting of a blank from the pile 7 is facilitated by a member 161 extending through the window apertures furnished with a lip 160 so as to prevent the edge of the window of one blank catching up in the next. Further rolls 18 and guides 20, 22 ensure the blank being delivered to the main rotating drum 21 where adjustable pins 24 engage the trailing edge of the blanks to feed them forward beneath wires &c. 25.
Patent GB-1200945-A (GB)
Title: Arrangement for bringing a driven member to rest in a predetermined position
IPC: B23Q15/26
Filed: 1967-10-05
Abstract: 1,200,945. Automatic speed control. HEBERLEIN & CO. A.G. Oct.5, 1967 [Oct.7, 1966], No.45536/67. Heading G3R. [Also in Division H2] An electric motor is braked dynamically in two stages, the first stage being accompanied by a reduction in supply voltage, and the motor coming to rest in a predetermined position at the end of the second stage. When a pedal 7 is depressed to start a series D.C. motor 3, an adjustable resistor 21 is connected to controller 14 and thyristors 11 receive firing pulses to accelerate the motor. When the pedal is released, a thyristor 28 becomes conductive so that the armature of the motor is short-circuited through a braking resistor 27, the thyristor 28 being energized by the discharge of capacitor 39 and reverting to its blocked state when the braking current decreases to a low value. Release of the pedal also connects adjustable resistor 19 to the controller 14 whereby the phase angle at which the thyristors 11 become conductive corresponds to a supply voltage suitable for low-speed operation of the motor. When a motor-driven cam 5 takes up a standstill position, a contact 6<SP>1</SP> breaks the connection between the resistor 19 and controller 14, whilst contact 62 causes capacitor 37 to discharge and to re-energize the thyristor 28. The second braking action halts the motor in a predetermined position. The controller 14 comprises a bridge circuit for comparing the armature voltage with a reference voltage, the error signal being used to charge a capacitor which discharges when the breakdown voltage of a trigger element is reached. Firing pulses are then supplied to the thyristors 11, the phasing of which depends upon the speed of the motor and by the setting of that resistor 19 or 21 which has been switched into circuit. A free-wheeling diode 26 may be dispensed with, and a tachometer generator may be associated with the controller 14.
Patent GB-1451602-A (GB)
Title: Treatment of tobacco
IPC: A24B3/06
Filed: 1972-10-06
Abstract: 1451602 Humidifying tobacco W H DICKINSON ENG Ltd 8 Oct 1973 [6 Oct 1972] 46163/72 Heading A2C An apparatus for conditioning bales of tobacco which is similar to that described in U.K. Specification 1364839 except that the conditioning fluid (e.g. moist air) is drawn through the front face of the bale by providing suction ports 25c adjacent at least one of the sides of bale. It is also possible to deliver moist air to the ports 25c at above atmospheric pressure thereby reversing the flow direction.
Patent GB-1485137-A (GB)
Title: Suction conveyors
IPC: B31B1/12
Filed: 1974-10-25
Abstract: 1485137 Feeding sheets J BOBST & FILS SA 25 Oct 1974 [27 March 1974] 46339/74 Heading B8R A suction conveyer for sheets comprises an endless belt 26 and a guide member 17, whereby sheets 6 are carried over a vacuum chamber 3, the air inlet apertures 18, 19 being covered by a spring steel shutter 20, between which and the apertures the sheets are fed, so that the apertures are never open to atmosphere so as to reduce the suction force in the chamber or in any other chambers supplied from the same suction source.
Patent GB-1224220-A (GB)
Title: Liquid coating can ends
Inventor: BELL GEORGE
IPC: B05B13/02
Filed: 1968-09-30
Abstract: 1,224,220. Rotary conveyer. METAL BOX CO. Ltd. 15 Sept., 1969 [30 Sept., 1968], No. 46362/68. Heading B8A. [Also in Division B2] A rotary conveyer for feeding can ends from a magazine to a spraying position 12 and then to a delivery position comprises an intermittently rotatable star wheel 7 which receives the can ends through a locating plate 8. The star wheel has notches 9 in its periphery and pegs 10 associated with each notch extending downwards from the underside of the wheel 7. The can end is fed between two "U"-shaped guiderails 11 in which the flange of the can is located. After coating the can end is engaged by an arm 14 of a rotatable three-armed transfer device which removes the can end from the notch of the wheel and transfers it to a delivery position.
Patent GB-1435812-A (GB)
Title: Method of making a razor blade
IPC: C23C14/35
Filed: 1973-04-24
Abstract: 1435812 Sputtering refractory material on to razor blade edges WARNER-LAMBERT CO 24 April 1973 46383/74 Divided out of 1435811 Heading C7F  A razor blade is coated with corundum,  synthetic sapphire, glass, quartz, Al 2 O 3 , BeO, SiC, WC or BN by R F sputtering. The sputtering is preferably carried out on a clamped stack of razor blades in a chamber evacuated to 10<SP>-6</SP> Torr and an inert gas such as argon is then introduced to a pressure of 5-8 x 10<SP>-3</SP> Torr. The razor blades are positioned about 1¢ inches from the target which is planar and parallel to the razor blades and sputtering deposition is effected at 30 Š/min. with an RF power of 1À4 KW and a self-bias electrode voltage of 2À2 KVDC. A metal layer and an inter lubricious polymer layer may then be RF sputtered on to the coated blades as disclosed in the parent Specification 1435811.
Patent GB-1034719-A (GB)
Title: Improvements in holders for electric lamps
Inventor: COOPER PETER JOHN
IPC: F21V19/00
Filed: 1963-11-25
Abstract: 1,034,719. Mounting lamps. G. E. WEBSTER & CO. Ltd. Nov. 25, 1964 [Nov. 25, 1963], No. 46445/63. Heading F4R. [Also in Division H2] A lampholder 3-9 (see Division H2) is axially adjustable in a parabolic reflector 2, where it is clamped in position by means 13.
Patent GB-1130169-A (GB)
Title: Process and device for gas purification
IPC: B01D47/02
Filed: 1965-11-03
Abstract: 1,130,169. Gas scrubber. MINOTAURE S.a.r.L. 3 Nov., 1965 [11 Dec., 1964], No. 46588/65. Heading B1R. In a gas scrubber the gas to be scrubbed is passed from an inlet 5 onto the surface of the liquid in the scrubber and passes below an elongated plate with sections 10, 19, 20 and 21 to an outlet 22, liquid being entrained by the gas at the lower edge of a baffle 8 and at the entrance to a channel 13 formed between plute portion 19 and a baffle 14 so that a series of gas/liquid vortices is formed at spaced intervals along the path traversed by the gas.
Patent GB-1197979-A (GB)
Title: Two-Piece Ring Block for Lens Blanks
IPC: B24B13/005
Filed: 1967-10-13
Abstract: 1,197,979. Grinding. UNIVIS Inc. 13 Oct., 1967 [10 Nov., 1966], No. 46821/67. Heading B3D. A multiple piece ring lens block comprises a centrally disposed ring 18 for adherence to one side of a lens blank 12 for holding the blank in an edging apparatus, and an outer ring 14 spaced outwardly from the central ring for adherence to the same side of the blank for holding the blank during a previous stop in the manufacture of the lens and being removable from the blank independently of the central ring. The central ring has an internal conical surface 34 which constitutes a reference surface for the mechanical centre of the blank and an outer surface 32 which is slightly conical. A pair of parallel walls 36, 38 within the cavity defined by surface 34 provide a horizontal axis reference which, in the case of a bifocal lens, will be substantially parallel to the top line of the bifocal segment. An arcuate groove between the walls provides a universal connection with ball-shaped members during grinding of the lens. A pair of notches 46, 48 are cut into the top edge of the ring to provide a reference for the cylinder axis of the lens. The outer ring 14 has depending legs 28 and feet 30 engaging the surface of the blank and its outer surface 22 is the reference surface for the optical centre of the blank. A pair of slots 24, 26 in the ring provide a reference for the cylinder axis of the blank. The rings are of moulded organic resinous material and are secured to the finished side of a semifinished lens blank by a low melting point alloy 20. The lens blank is held on a support 50 by a mould 52 which holds the outer ring 14 in position while the alloy is dispersed from a spout 60. The central ring is held by spring clips 64, 66 on a holder and lowered thereby into the molten alloy which fills a lower space 20a. in the central ring, air passing through vents 70, 72. The lower end of the central ring is chamfered at 78 to provide a line contact with the lens blank. After removal from the mould, the assembly of blank and ring is mounted in an edge grinding and contouring machine for forming a contour on the blank, a chuck engaging the burner conical surface 34 and the walls surface 36, 38 to align the blank. Thereafter, the blank is mounted in an optical surface generating machine for forming the surface of the lens to the desired prescription using the optical reference surface and cylinder axis reference on the outer ring. The outer ring and interposed bonding material are then removed and the reference surfaces on the inner ring used during the forming of the final edge contour on the blank.
Patent GB-1158986-A (GB)
Title: Insulator Shielded Cathode.
IPC: H01J17/38
Filed: 1966-10-19
Abstract: 1,158,986. Electron beam apparatus. UNITED AIRCRAFT CORP. 19 Oct., 1966 [3 Nov., 1965], No. 46841/66. Heading H1D. The hollow cathode 1 of a device for generating a beam of electrons by establishing a glow discharge within the hollow cathode and between the cathode an anode disposed in a suitably evacuated chamber, is provided with an insulator shield 9 disposed around the external surface of the cathode to suppress electron emission from this surface and to exclude discharge plasma from the space defined by the external cathode surface and the shield. As shown, insulator shield 9, of alumina, zirconia, boron nitride or beryllia, is a hollow cylinder secured to the lead-in insulator 4 and is spaced by distance 10 coaxially around cathode 1 and its support 2 and terminates a distance 11 from the face of the cathode to prevent arcing therebetween. The axially disposed anode 7 may be a workpiece.
Patent GB-1362987-A (GB)
Title: Steering column switch for automotive vehicles
IPC: B60Q1/42
Filed: 1971-10-08
Abstract: 1362987 Mechanical switches SWFSPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU GmbH 8 Oct 1971 [14 Oct 1970] 46917/71 Heading H1N A steering column switch arrangement for motor vehicles comprises a control lever 10 which is mounted in or on a control ring 13 rotatable on a switch housing 14 round the steering column (not shown) whereby horizontal movement of the lever 10 controls the direction indicator switch (not shown) by means of the ring 13, and vertical movement of lever 10 controls an additional switch device (not shown) by means of actuating member 24, and rotary movement of lever 10 about its own axis controls a wiper switch in housing 25 with contacts 28 for co-operation with a bridge 27 on an operating member 30 fixed on said control lever 10, said housing 25 being formed in a control lever support member 20 which is journalled (at 17) for pivotal movement in a vertical plane on said control ring 13 and has a recess 22 and locking member 23 for securing the lever 10 therein but allowing rotation of the lever about its own axis. An additional retractive switch 12 for a washing installation is operable by axial displacement of a rod 11 extending through lever 10.
Patent GB-1197925-A (GB)
Title: Coating Substrates
Inventor: KOBLITZ FRANCIS FREDERICK
IPC: B05D7/26
Filed: 1967-10-16
Abstract: 1,197,925. Coating. PENNSALT CHEMICALS CORP. 16 Oct., 1967 [23 Nov., 1966], No. 46982/67. Heading B2K. A substrate is coated with a pigmented primer layer containing an acrylic polymer composed of (a) from 40 to 80% of an ester of acrylic acid with a C 1 -C 18  primary alkanol, (b) from 18 to 59.5% of at least one C 1 -C 6  alkyl methacrylate, and (c) from 0.5 to 2.0% of one or more alpha, beta-unsaturated carboxylic acids, and a clear top layer containing a fluorinated copolymer composed of 60 to 95% vinylidene fluoride and 40 to 5% of tetrafluoroethylene or perfluoropropene. The substrate may be of wood, metal such as aluminium. Examples of acrylic polymers are butyl acrylate-methyl methacrylate-acrylic acid, ethylacrylate-methylmethacrylate-acrylic acid-methacrylic acid, ethylacrylatetertiary-butyl methacrylateitaconic acid, butyl acrylate-methyl methacrylate-methacrylic acid, ethyl acrylate-methyl methacrylate-methacrylic acid copolymers. Examples of other acrylic acid esters, alkyl methacrylates and alpha, betaunsaturated cardboxylic acids are given. The pigments may comprise titanium dioxide, whiting, talc, magnesium silicate, mica, phthalocyanines, chrome oxide, iron.